CN215058530U - Hydraulic system of miniature push bench - Google Patents
Hydraulic system of miniature push bench Download PDFInfo
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- CN215058530U CN215058530U CN202121471398.9U CN202121471398U CN215058530U CN 215058530 U CN215058530 U CN 215058530U CN 202121471398 U CN202121471398 U CN 202121471398U CN 215058530 U CN215058530 U CN 215058530U
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Abstract
The utility model discloses a miniature pipe push bench hydraulic system, include: the pilot control part is provided with an oil tank, one end of a first electromagnetic valve is connected to the oil tank, the other end of the first electromagnetic valve is connected to one end of a first filter, one end of a first overflow valve is connected to the oil tank, the other end of the first overflow valve is connected to one end of the first filter, one end of a gear pump driven by a first motor is connected to the oil tank through a second filter, the other end of the gear pump is connected to one end of the first filter, and a first pressure gauge is connected to one end of the first filter; the main control part is provided with a first electromagnetic directional valve, a second electromagnetic directional valve, a third electromagnetic directional valve and the like. The utility model discloses simple structure, convenient to use.
Description
Technical Field
The utility model relates to a hydraulic system especially relates to miniature push bench hydraulic system.
Background
The miniature push bench needs a hydraulic system to control and then work, and the existing hydraulic control system is inconvenient to use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem and providing a convenient miniature push bench hydraulic system.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a hydraulic system of a miniature push bench comprises:
the pilot control part is provided with an oil tank, one end of a first electromagnetic valve is connected to the oil tank, the other end of the first electromagnetic valve is connected to one end of a first filter, one end of a first overflow valve is connected to the oil tank, the other end of the first overflow valve is connected to one end of the first filter, one end of a gear pump driven by a first motor is connected to the oil tank through a second filter, the other end of the gear pump is connected to one end of the first filter, and a first pressure gauge is connected to one end of the first filter;
the oil tank is connected with a T port of the first electromagnetic directional valve through a third filter and a radiator, a first pressure transmitter and a second pressure gauge are arranged at a P port of the first electromagnetic directional valve, and an A port and a B port of the first electromagnetic directional valve are connected with a first hydraulic cylinder;
a port T of the second electromagnetic directional valve is connected with one end of the radiator, a port P of the second electromagnetic directional valve is provided with a second pressure transmitter and a third pressure gauge, a port A and a port B of the second electromagnetic directional valve are connected with the first hydraulic motor, one end of a second overflow valve is connected with the port T of the second electromagnetic directional valve, and the other end of the second overflow valve is connected with the port P of the second electromagnetic directional valve;
the port T of the third electromagnetic directional valve is blocked by the integrated block, the port P of the third electromagnetic directional valve is connected with one end of a second hydraulic pump driven by a motor through a one-way valve, the port A of the third electromagnetic directional valve is connected with one end of a first hydraulic pump driven by the motor through the one-way valve, one end of the first hydraulic pump is also connected with the port P of the first electromagnetic directional valve, the port B of the third electromagnetic directional valve is connected with the port P of the second electromagnetic directional valve, wherein the other end of the second hydraulic pump is connected with an oil tank, and the other end of the first hydraulic pump is connected with the oil tank;
one end of the first electromagnetic overflow valve is connected with one end of the radiator, the other end of the first electromagnetic overflow valve is connected with one end of the second hydraulic pump, and the other end of the first electromagnetic overflow valve is provided with a fourth pressure gauge;
one end of the second electromagnetic overflow valve is connected with the oil tank, the other end of the second electromagnetic overflow valve is connected with one end of the first hydraulic pump, and a fifth pressure gauge is arranged at the other end of the second electromagnetic overflow valve;
the other end of the first filter is respectively connected with a first pilot flow control assembly used for controlling the first hydraulic pump and a second pilot control assembly used for controlling the second hydraulic pump.
Further: the main control part is provided with an air filter, a liquid level thermometer and an electric contact thermometer which are arranged on the oil tank.
Further: the main control portion has a liquid level controller disposed on the oil tank.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses simple structure, convenient to use.
Drawings
FIG. 1 is a partial structure diagram of a hydraulic system of a mini push bench.
FIG. 2 is another structural diagram of the hydraulic system of the mini push bench, in which ZZ point and CC point are connected.
Detailed Description
Example 1
Referring to fig. 1 to 2, a hydraulic system of a micro push bench includes a pilot control part and a main control part.
The pilot control part is provided with an oil tank 1, one end of a first electromagnetic valve 23 is connected with the oil tank 1, the other end of the first electromagnetic valve is connected with one end of a first filter 24, one end of a first overflow valve 22 is connected with the oil tank 1, the other end of the first overflow valve is connected with one end of the first filter 24, one end of a gear pump 20 driven by a first motor 19 is connected with the oil tank 1 through a second filter 21, the other end of the gear pump is connected with one end of the first filter 24, and a first pressure gauge 25 is connected with one end of the first filter 24.
In the main control part, an oil tank 1 is connected with a T port of a first electromagnetic directional valve 10 (a three-position four-way directional valve) through a third filter 6 and a radiator 18, a P port of the first electromagnetic directional valve 10 is provided with a first pressure transmitter 13 and a second pressure gauge 26, and a port A and a port B of the first electromagnetic directional valve 10 are connected with a first hydraulic cylinder 15.
A port T of a second electromagnetic directional valve 10a (a three-position four-way directional valve) is connected with one end of a radiator 18, a port A and a port B of the second electromagnetic directional valve 10a are connected with a first hydraulic motor 16, one end of a second overflow valve 12 is connected with the port T of the second electromagnetic directional valve 10a, and the other end of the second overflow valve is connected with the port P of the second electromagnetic directional valve 10 a.
The T port of a third electromagnetic directional valve 11 (a two-position four-way directional valve) is blocked by an integrated block (oil is not allowed to pass through, and the T port is blocked on the integrated block), the P port of the third electromagnetic directional valve 11 is connected with one end of a second hydraulic pump 7B driven by a motor through a one-way valve (a first one-way valve 91), the A port of the third electromagnetic directional valve 11 is connected with one end of a first hydraulic pump 7a driven by the motor through a one-way valve (a second one-way valve 92), one end of the first hydraulic pump 7a is also connected with the P port of the first electromagnetic directional valve 10, the P port of the second electromagnetic directional valve 10a is connected with the third electromagnetic directional valve 11B, the other end of the second hydraulic pump 7B is connected with an oil tank 1, and the other end of the first hydraulic pump 7a is connected with the oil tank 1.
One end of the first electromagnetic overflow valve 8a is connected with one end of the radiator 18, the other end is connected with one end of the second hydraulic pump 7b, and the other end of the first electromagnetic overflow valve 8a is provided with a fourth pressure gauge 14.
One end of the second electromagnetic overflow valve 8 is connected with the oil tank 1, the other end is connected with one end of the first hydraulic pump 7a, wherein the other end of the second electromagnetic overflow valve 8 is provided with a fifth pressure gauge 14 a.
The other end of the first filter 24 is connected to a first pilot control assembly (a flow control assembly) for controlling the first hydraulic pump 7a, the first pilot control assembly (the flow control assembly) is composed of a proportional electromagnet, a pilot spool and a variable piston, oil output by the pilot pump enters two ends of the variable piston through an X port, and the proportional electromagnet can control the pilot spool to move along with the current. The pilot valve core moves to change the pressure difference of pilot control oil entering the variable piston, so that the stepless change of the output flow of the oil pump (first hydraulic pump) is changed. The pilot oil displaced by the displacement of the variable piston is discharged out of an oil pump (first hydraulic pump) through a T port. The X and T ports are ports on an oil pump (first hydraulic pump), and the proportional electromagnet, the pilot valve core and the variable piston are integrated on the oil pump (first hydraulic pump) and are a component on the oil pump (first hydraulic pump). The first pilot control assembly and the first hydraulic pump are of an integral structure, and reference may be made to the prior art specifically, including but not limited to a variable displacement plunger pump and a second pilot control assembly [ the second pilot control assembly is similar to the first pilot control assembly, and is not described in detail ] for controlling the second hydraulic pump 7 b.
It should be noted that the drawings show a first quick-change coupler 17a, a second quick-change coupler 17b, a third quick-change coupler 17c, a fourth quick-change coupler 17d, a fifth quick-change coupler 17e, a sixth quick-change coupler 17f, and the like.
Propelling work: (1) the boost pump (first hydraulic pump 7a) is activated and the control system automatically starts the gear pump 20 simultaneously. The gear pump 20 continuously outputs pilot pressure oil through the first electric motor 19. The pressure oil acts on the pilot control end of the propeller pump (first hydraulic pump 7a) through the first filter 24. In the whole process, redundant pilot pressure oil returns to the oil tank through the first overflow valve 22. (2) The high-pressure oil output from the propulsion pump (first hydraulic pump 7a) acts on the first hydraulic cylinder 15 through the right position of the first electromagnetic directional valve 10 (the path is P port → a port, B port → T port at this time), and the purpose of propulsion is achieved. And redundant high-pressure oil returns to the oil tank through the second electromagnetic overflow valve 8 in the propelling process. When the propelling speed is required to be changed, the output flow can be regulated by regulating the pilot control end of the propelling pump (the first hydraulic pump 7a) to be larger than the input current of the electromagnets, and the pilot valve core is matched with the variable piston, so that the stepless speed regulation is realized. If the full flow rate still cannot meet the propulsion speed requirement, the rotary pump (second hydraulic pump 7b) may be started, and the high-pressure oil output therefrom automatically merges with the high-pressure oil of the propulsion pump (first hydraulic pump 7a) through the right position of the electromagnetic directional valve 11 and acts on the first hydraulic cylinder 15.
Rotating: (1) the rotary pump (second hydraulic pump 7b) is started and the control system automatically starts the gear pump 20 at the same time. The gear pump 20 continuously outputs pilot pressure oil through the first electric motor 19. The pressure oil acts on the pilot control end of the rotary pump (second hydraulic pump 7b) through the first filter 24. In the whole process, redundant pilot pressure oil returns to the oil tank through the first overflow valve 22. (2) The high-pressure oil output from the rotary pump (second hydraulic pump 7B) acts on the first hydraulic motor 16 through the right position of the second electromagnetic directional valve 10a (in this case, the passage is P port → a port, B port → T port), and reaches the purpose of rotation. And redundant high-pressure oil returns to the oil tank through the second electromagnetic overflow valve 8 in the rotation process. When the rotation speed is required to be changed, the output flow can be adjusted by adjusting the magnitude of the current input by the pilot control end of the rotary pump (the second hydraulic pump 7b) compared with the input current of the row of electromagnets under the matching of the pilot valve core and the variable piston, so that the stepless speed regulation is achieved.
Rotation at confluence: in the combined state in which the thrust pump (first hydraulic pump 7a) and the rotary pump (second hydraulic pump 7B) are simultaneously operated in the thrust state, the second electromagnetic directional valve 10a is energized, the third electromagnetic directional valve 11 is energized, and the directional valves are in the left position (at this time, the passage is P port → B port, a port → T port). The third electromagnetic directional valve 11 blocks the passage of the rotary pump set for supplying oil to the first hydraulic cylinder 15, and the oil of the rotary pump (the second hydraulic pump 7b) can only act on the first hydraulic motor 16 through the left position of the second electromagnetic directional valve 10 a. The merged oil is automatically shunted under the condition of power failure of the third electromagnetic directional valve 11.
For the sake of brevity, the description of the prior art is omitted herein.
Example 2
The basic solution is the same as the embodiment 1 except that the main control part has an air filter 2, a level liquid thermometer 3, and an electric contact thermometer 4 arranged on the fuel tank.
This embodiment can be further improved in that the main control part also has a level controller 5 arranged on the tank.
Above only do the preferred embodiment of the present invention, the protection scope of the present invention is not limited to the above embodiment, all belong to the technical scheme of the present invention all belong to the protection scope of the present invention. For those skilled in the art, several modifications can be made without departing from the principle of the present invention, and such modifications should also be considered as the protection scope of the present invention.
Claims (3)
1. The utility model provides a miniature pipe push bench hydraulic system which characterized in that includes:
the pilot control part is provided with an oil tank (1), one end of a first electromagnetic valve (23) is connected to the oil tank (1), the other end of the first electromagnetic valve is connected to one end of a first filter (24), one end of a first overflow valve (22) is connected to the oil tank (1), the other end of the first overflow valve is connected to one end of the first filter (24), one end of a gear pump (20) driven by a first motor (19) is connected to the oil tank (1) through a second filter (21), the other end of the gear pump is connected to one end of the first filter (24), and a first pressure gauge (25) is connected to one end of the first filter (24);
the oil tank (1) is connected with a T port of the first electromagnetic directional valve (10) through a third filter (6) and a radiator (18), a first pressure transmitter (13) and a second pressure gauge (26) are arranged at a P port of the first electromagnetic directional valve (10), and an A port and a B port of the first electromagnetic directional valve (10) are connected with the first hydraulic cylinder (15);
a T port of a second electromagnetic directional valve (10a) is connected with one end of a radiator (18), a P port of the second electromagnetic directional valve (10a) is provided with a second pressure transmitter and a third pressure gauge, a port A and a port B of the second electromagnetic directional valve (10a) are connected with a first hydraulic motor (16), one end of a second overflow valve (12) is connected with the T port of the second electromagnetic directional valve (10a), and the other end of the second overflow valve is connected with the P port of the second electromagnetic directional valve (10 a);
a T port of a third electromagnetic directional valve (11) is plugged by an integrated block, a P port of the third electromagnetic directional valve (11) is connected with one end of a second hydraulic pump (7B) driven by a motor through a one-way valve, a A port of the third electromagnetic directional valve (11) is connected with one end of a first hydraulic pump (7a) driven by the motor through the one-way valve, one end of the first hydraulic pump (7a) is further connected with the P port of a first electromagnetic directional valve (10), a B port of the third electromagnetic directional valve (11) is connected with a P port of a second electromagnetic directional valve (10a), the other end of the second hydraulic pump (7B) is connected with an oil tank (1), and the other end of the first hydraulic pump (7a) is connected with the oil tank (1);
one end of the first electromagnetic overflow valve (8a) is connected with one end of the radiator (18), the other end is connected with one end of the second hydraulic pump (7b), and the other end of the first electromagnetic overflow valve (8a) is provided with a fourth pressure gauge (14);
one end of a second electromagnetic overflow valve (8) is connected with the oil tank (1), the other end is connected with one end of a first hydraulic pump (7a), and a fifth pressure gauge (14a) is arranged at the other end of the second electromagnetic overflow valve (8);
the other end of the first filter (24) is respectively connected with a first pilot flow control assembly used for controlling the first hydraulic pump (7a) and a second pilot control assembly used for controlling the second hydraulic pump (7 b).
2. The hydraulic system of a micro push bench according to claim 1, characterized in that the main control part has an air filter (2), a liquid level thermometer (3), and an electric contact thermometer (4) arranged on the oil tank.
3. The micro push bench hydraulic system according to claim 2, characterized in that the main control section has a level controller (5) arranged on the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121471398.9U CN215058530U (en) | 2021-06-30 | 2021-06-30 | Hydraulic system of miniature push bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121471398.9U CN215058530U (en) | 2021-06-30 | 2021-06-30 | Hydraulic system of miniature push bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215058530U true CN215058530U (en) | 2021-12-07 |
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ID=79229867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121471398.9U Active CN215058530U (en) | 2021-06-30 | 2021-06-30 | Hydraulic system of miniature push bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215058530U (en) |
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2021
- 2021-06-30 CN CN202121471398.9U patent/CN215058530U/en active Active
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